blood sugar logging

I would like to suggest adding some functionality for diabetics that would allow for additional data to be tracked. I haven't found an application yet that does calories,sugars and carb exchanges. I tend to eat based on my meter and being able to see how my sugars where affected based on the foods I eat in a sortable format that could be exported and given to a doctor etc would be a useful tool. Analytical support based on fixed data points would be nice. I currently use the sugar log app to track my readings. And manually notate what I have eaten